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对雷州林业局营造桉树与厚荚相思混交林进行生物量测定及对土壤影响分析结果表明:6年生尾叶桉无性系MLA与厚荚相思行间混交林地上部分群体生物量比纯林提高36.6%以上,行间混交的MLA单株叶量、细根分别比纯林MLA提高38.4%、82.8%;带状混交林分叶量比纯林提高4.9倍,带状混交的MLA单株叶量、细根分别比纯林提高19.5%、4.7%。4年生时混交林凋落物干重比纯林提高31%以上,0——30cm土层有机质、全氮、全钾分别比纯林提高17.2%、26.9%、19.3%。
The biomass of Eucalyptus and Acacia crassicarpa stand in Leizhou Forestry Bureau was measured and the influence on soil was analyzed. The results showed that the biomass of aerial part of 6-year-old Eucalyptus urophylla clonal mixed forest was increased by 36.6 % Or more, the leaf mass and fine root of mixed MLA increased by 38.4% and 82.8%, respectively, compared with the pure forest MLA. The leaf biomass of mixed forest was 4.9 times higher than pure forest, , Fine roots were higher than the pure forest increased 19.5%, 4.7%. The dry weight of mixed litter in 4-year-old increased more than 31% than that of pure forest. The contents of organic matter, total nitrogen and total potassium increased by 17.2%, 26.9% and 19.3% in 0-30 cm soil layer respectively.